sherwood3333 Posted January 6, 2015 Share Posted January 6, 2015 can any one tell me what the horn relay does? and do I have to have one to make the horn work Link to comment Share on other sites More sharing options...
37_Roadmaster_C Posted January 6, 2015 Share Posted January 6, 2015 The horn relay is a switch which is activated remotely by the horn button on the steering wheel. It serves two purposes, 1) it allows for the switching of a higher power circuit (horn) with a low power circuit (the button), 2) it allows the button, which grounds a wire when pushed, to switch positive to the horn. There are other reasons as well, but these are the basics. Also, YES, you need one to make the horn work.R Link to comment Share on other sites More sharing options...
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